Long-term presence of charcoal increases maize yield in Belgium due to increased soil water availability
| Autor: | Bart Kerré, Yannah Cornelis, Bernd Willaert, Erik Smolders |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Silage
Crop yield food and beverages Soil Science Growing season 04 agricultural and veterinary sciences Plant Science 010501 environmental sciences complex mixtures 01 natural sciences Nutrient Agronomy visual_art Soil water Biochar 040103 agronomy & agriculture visual_art.visual_art_medium 0401 agriculture forestry and fisheries Environmental science Charcoal Agronomy and Crop Science 0105 earth and related environmental sciences Black spot |
| Zdroj: | European Journal of Agronomy. 91:10-15 |
| ISSN: | 1161-0301 |
| DOI: | 10.1016/j.eja.2017.09.003 |
| Popis: | The short-term benefits of biochar application on crop yield await confirmation with long-term effects when initial liming or nutritional benefits are attenuated. In this study, we determined the above-ground silage maize yield in soils under historical charcoal kilns (black spots, >150 years enrichment) and adjacent soils in southern Belgium in three consecutive years (2014–2016). Maize yield in these well fertilized arable soils was, on average, 23% higher (P −1 soil (63% of total SOC) in the black spots. The factor yield increase decreased with average rainfall during the growing season (P 13 C analysis of maize leaves at final harvest determined in one season indicated lower water stress for plants grown on black spots. Nutrient concentrations in maize leaves were unaffected by charcoal even though significant positive effects of charcoal on soil CEC and concentrations of available Ca and Mg were detected. This study shows, for the first time, that historical charcoal amendment can increase maize yield in fertile, temperate soils considerably. These effects are most likely related to soil physical effects, rather than to nutritional effects. |
| Databáze: | OpenAIRE |
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